Application of Baylis–Hillman Methodology in the Synthesis of Coumarin Derivatives
作者:Perry T. Kaye、M. A. Musa
DOI:10.1081/scc-120018937
日期:2003.1.6
Abstract A general, chemoselective approach to 3-substituted coumarins via Baylis–Hillman reactions of O-benzylated salicylaldehyde precursors has been demonstrated. Competitive cyclization to chromene derivatives is inhibited by conjugate addition of benzylamine or piperidine to the α,β-unsaturated ester intermediates.
摘要 已经证明了通过 O-苄基化水杨醛前体的 Baylis-Hillman 反应生成 3-取代香豆素的通用化学选择性方法。苄胺或哌啶与 α,β-不饱和酯中间体的共轭加成抑制了色烯衍生物的竞争性环化。